OCEANIC Chute 3 BCD Scuba Buoyancy Vest Hose Inflator Size Large. With Spring out lanyards etc... Reinforced shoulders and a heavy-duty lumbar pad comfortably distribute the additional weight of doubles or redundant air supplies. Other features include:Patented BioFlex rear inflation bladder provides maximum lift and minimum drag when deflated. Reinforced shoulders, padded back pack with lumbar support and a sternum strap ensure comfort and stability when carrying.